2145546554 has 8 divisors (see below), whose sum is σ = 3225302388. Its totient is φ = 1070445760.

The previous prime is 2145546553. The next prime is 2145546617. The reversal of 2145546554 is 4556455412.

It can be written as a sum of positive squares in 2 ways, for example, as 2143227025 + 2319529 = 46295^2 + 1523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2145546551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162607 + ... + 1164450.

Almost surely, 2^2145546554 is an apocalyptic number.

2145546554 is a deficient number, since it is larger than the sum of its proper divisors (1079755834).

2145546554 is a wasteful number, since it uses less digits than its factorization.

2145546554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327520.

The product of its digits is 480000, while the sum is 41.

The square root of 2145546554 is about 46320.0448402201. The cubic root of 2145546554 is about 1289.7711177762.

The spelling of 2145546554 in words is "two billion, one hundred forty-five million, five hundred forty-six thousand, five hundred fifty-four".